Covid-19 data for the US
Last verified: April 1, 2026
This API requires no authentication — you can start making requests immediately with no sign-up or API key needed.
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fetch() in JavaScript, curl in your terminal, or any HTTP client to call the API.No-auth APIs are the easiest to get started with — perfect for learning, prototyping, and building side projects.
This API does not support CORS, so you'll need to call it from a server-side application or use a proxy. Direct browser requests will be blocked by the browser's same-origin policy.
Covid Tracking Project is a free, no-authentication API in the Health category. You can start using it immediately without creating an account or obtaining an API key — just send an HTTP request and receive data back. This API supports HTTPS for secure connections and does not support CORS — you will need to call it from a server-side application.
Covid Tracking Project fits naturally into projects that touch the Health space. Here are a few directions developers commonly take when working with APIs in this category — any of them could be a fit depending on the specific endpoints Covid Tracking Project exposes:
If a specific use case isn't listed, scroll back to the code examples above and adapt the request shape to match the endpoint you need. Most Health APIs follow similar request/response patterns, so the snippet that works for one endpoint usually works for the rest with small tweaks.
1. Skim the documentation first. Open the link above and look for two things: the base URL pattern and a list of available endpoints. Knowing both up front saves you from guessing parameter names or formats. Most providers also publish example responses next to each endpoint — copy one into your editor as a reference for the JSON shape your code will be parsing.
2. No authentication needed. Covid Tracking Project is one of the no-auth APIs in our directory, which means you can skip account creation entirely. Just point a request at the endpoint and you'll get data back. This makes it ideal for prototypes, learning exercises, and demos where you want to see something working in under a minute.
3. Make a request from the command line. Before wiring an API into your application, send a single request with curl or your HTTP client of choice. Confirm that the response shape matches what the docs promised. If it doesn't, your application code would have hit the same surprise — better to find out now while you only have one terminal window to debug.
4. Wire it into your code. Once a manual request works, copy that request into your application as a function. Add error handling: APIs return 4xx and 5xx codes for client and server errors respectively, and your code needs to behave reasonably when one comes back. Our error-handling guide covers the patterns that make this less painful.
5. Don't call it directly from the browser. Covid Tracking Project doesn't support CORS, so a browser-side fetch() will be blocked by the same-origin policy. Call it from your backend instead and forward the result to the frontend. If you don't have a backend, a serverless function (Cloudflare Workers, Netlify Functions, Vercel) is a quick way to add one.
Health APIs offer medical databases, fitness tracking, nutrition data, and wellness information. Build health monitoring apps, symptom checkers, or fitness platforms with trusted health data.
Covid Tracking Project is one of dozens of free Health APIs we've catalogued. Some are nearly interchangeable; others have distinct strengths and weaknesses that only become clear when you read their docs side-by-side. If Covid Tracking Project doesn't quite fit your project, the Health category page lists every alternative we know about, with auth and CORS columns so you can compare at a glance.
When evaluating Health APIs, the criteria that matter most are typically: rate limits on the free tier, freshness of the underlying data, regional coverage (does it work for your users' geography?), and how active the provider's maintenance schedule is. APIs that haven't been updated in years tend to drift out of sync with the underlying data sources, even if they technically still respond.
Covid Tracking Project is a health API that may offer medical information, fitness data, disease databases, drug information, or health tracking capabilities. The specific data depends on the API's focus and regulatory compliance. Always verify health data against official medical sources.
Health APIs source their data from various providers including government health databases, medical literature, and curated datasets. While Covid Tracking Project can be useful for building health-related applications, its data should not replace professional medical advice. Always include appropriate disclaimers in your applications.
Health data privacy (HIPAA, GDPR) is important when building health applications. Covid Tracking Project as a public API provides general health information rather than personal health records. However, if you collect user health data in your app, ensure your own application complies with relevant regulations. See more in our Health APIs.
Yes, Covid Tracking Project is listed as a free public API. It requires no sign-up or API key — you can start making requests immediately. Some APIs have rate limits on their free tier, so check the official documentation for current limits.
Yes! According to our most recent health check (Covid Tracking Project's last ping: 2026-04-01 13:42:00), this API is responding normally. We periodically verify all listed APIs to ensure they are still online and functioning.